Soild Roller Lsx down on power
Soild Roller Lsx down on power Here The setup
etp 245 heads
Vic jr with an elbow
Lq9 412ci give or take 2 cubes for get exact bore
12.5 to 1 comp
266/268 680/690 lift soild roller
Jessel Rockers
th-400 with a 5200 Extream Converter Concepts
had the car a few time to the track go the converter problem fixed threw it back on the dyno to see why its only traping 129 in a 3350 race weight car. First thought i had the valve adjusted to tight .006 on the intake .008 on the exhaust. talk to Erik from hk and he told me that isent where the power was being lost. car only made 440sae rwhp @ 6600 rpms then starts falling. this car should pull to at least 7300... i adjusted the valves @ .016 now and .018 dont think it made a huge diff but worth a try....im just outa ideas and geting fed up with the car.....did a comp test and every cly was 155-158 across the board
etp 245 heads
Vic jr with an elbow
Lq9 412ci give or take 2 cubes for get exact bore
12.5 to 1 comp
266/268 680/690 lift soild roller
Jessel Rockers
th-400 with a 5200 Extream Converter Concepts
had the car a few time to the track go the converter problem fixed threw it back on the dyno to see why its only traping 129 in a 3350 race weight car. First thought i had the valve adjusted to tight .006 on the intake .008 on the exhaust. talk to Erik from hk and he told me that isent where the power was being lost. car only made 440sae rwhp @ 6600 rpms then starts falling. this car should pull to at least 7300... i adjusted the valves @ .016 now and .018 dont think it made a huge diff but worth a try....im just outa ideas and geting fed up with the car.....did a comp test and every cly was 155-158 across the board
this should probably be in internal engine, not really adv tech
our 400 inch hyd cam setups have no problem going to 77-8200 rpm, look at the top end somewhere. Who picked the cam/springs/valvetrain and assembly?
Your definitely down 5 mph from our hyd stuff and should be a few more on top of that with solid roller and that compression. Im guessing you were expecting 138 mph traps or so?
our 400 inch hyd cam setups have no problem going to 77-8200 rpm, look at the top end somewhere. Who picked the cam/springs/valvetrain and assembly?
Your definitely down 5 mph from our hyd stuff and should be a few more on top of that with solid roller and that compression. Im guessing you were expecting 138 mph traps or so?
Last edited by GrannySShifting; Jun 27, 2007 at 11:31 AM.
Originally Posted by GrannySShifting
this should probably be in internal engine, not really adv tech
our 400 inch hyd cam setups have no problem going to 77-8200 rpm, look at the top end somewhere. Who picked the cam/springs/valvetrain and assembly?
Your definitely down 5 mph from our hyd stuff and should be a few more on top of that with solid roller and that compression. Im guessing you were expecting 138 mph traps or so?
our 400 inch hyd cam setups have no problem going to 77-8200 rpm, look at the top end somewhere. Who picked the cam/springs/valvetrain and assembly?
Your definitely down 5 mph from our hyd stuff and should be a few more on top of that with solid roller and that compression. Im guessing you were expecting 138 mph traps or so?
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
The compression psi is weak. You definitely have something wrong. with 12.5:1 you should be seeing easily 220 psi.
Rings washed out...etc.
Get me your phone number via PM and I can get you in touch with someone that can diagnose your problem. Need more info on valvesprings, retainers, etc.
Rings washed out...etc.
Get me your phone number via PM and I can get you in touch with someone that can diagnose your problem. Need more info on valvesprings, retainers, etc.
all plugs looked good ...rings r gaped for a large amount of n2o use for future plans.....i read with cams with larage overlaps that the compression test will be low like that
I agree with WOTFMAN, the compression does seem quite low. Even with that big of a cam, with a 12.5:1 compression, you should be seeing at a minimum 185-190psi and thats stretching it. You should try a leak down test on all cylinders.
got a good idea where the problem is put the temp light on and the hole left bank is all in the high 250s the right bank is the high 190 low 200 except the # 8 cyl wich is in the 250s.... thought maybee my 2 step box was screrwed up and unhooked it no diff.... gona have to get the noid light out tomorow and check the coils to
it really seems like those heads should carry the power a lot further as well. also if erik set up the valvetrain it should be right, but you might want to check the cam and make sure it isnt off a few degrees.
Originally Posted by 67Ranger
it really seems like those heads should carry the power a lot further as well. also if erik set up the valvetrain it should be right, but you might want to check the cam and make sure it isnt off a few degrees.
